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Diffstat (limited to 'libjava/classpath/javax/swing/Scrollable.java')
| -rw-r--r-- | libjava/classpath/javax/swing/Scrollable.java | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/Scrollable.java b/libjava/classpath/javax/swing/Scrollable.java index 9dce665..396d530 100644 --- a/libjava/classpath/javax/swing/Scrollable.java +++ b/libjava/classpath/javax/swing/Scrollable.java @@ -50,14 +50,57 @@ public interface Scrollable { Dimension getPreferredScrollableViewportSize(); + /** + * Return the preferred scrolling amount (in pixels) for the given + * scrolling direction and orientation when scrolling in small amounts + * like table lines. + * + * @param visibleRect the currently visible part of the component. + * @param orientation the scrolling orientation + * @param direction the scrolling direction (negative - up, positive -down). + * The values greater than one means that more mouse wheel or similar + * events were generated, and hence it is better to scroll the longer + * distance. + * + * @return the preferred scrolling distance, negative if up or left. + */ int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction); + /** + * Return the preferred scrolling amount (in pixels) for the given + * scrolling direction and orientation when scrolling in large amounts + * (pages). + * + * @param visibleRect the currently visible part of the component. + * @param orientation the scrolling orientation + * @param direction the scrolling direction (negative - up, positive -down). + * The values greater than one means that more mouse wheel or similar + * events were generated, and hence it is better to scroll the longer + * distance. + * + * @return the preferred scrolling distance, negative if up or left. + */ int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction); + /** + * Return true if the width of the scrollable is always equal to the + * view, where it is displayed, width (for instance, the text area with + * the word wrap). In such case, the horizontal scrolling should not be + * performed. + * + * @return true is no horizontal scrolling is assumed, faster otherwise. + */ boolean getScrollableTracksViewportWidth(); + /** + * Return true if the height of the scrollable is always equal to the view, + * where it is displayed, height.In such case, the vertical scrolling should + * not be performed. + * + * @return true is no horizontal scrolling is assumed, faster otherwise. + */ boolean getScrollableTracksViewportHeight(); } |